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A neighborhood is shattered after police say a couple and two children were found dead inside a home in Fontana Monday night. Ted Chen reports from Fontana for the NBC4 News at 5 p.m. Tuesday, Dec. 31, 2013. (Published Tuesday, Dec. 31, 2013)

Relatives discovered the bodies of four family members, including two children with multiple gunshot wounds, inside a Fontana, Calif. home after what appears to be a murder-suicide.

Police obtained a search warrant overnight and are continuing the investigation Tuesday morning at the home in the 7300 block of Palmetto Avenue. Authorities received a call from a 16-year-old boy who said his family members had been injured or possibly killed in the house, according to Fontana police Sgt. Doug Imhof.

"We located four bodies, two children, a female about 12 years old, a male about 10 years old, a female victim adult 35 to 40 (years old) and a male about the same age," Imhof said. "It appears as though they all lived there."